Heimdall

[Dec '25] Self Host DeepSeek models and chat via a chat UI

DeepSeek

Allows the web UI to connect from any origin.

Points OpenWebUI to the internal Ollama API endpoint for model access.

Secret key used by OpenWebUI to secure sessions and authentication.

You can specify the deepseek model to download at boot time (from https://ollama.com/library). Default is deepseek-r1

Allows Ollama to listen on all interfaces

Comma-separated list of allowed origins for CORS. Needed if you’re connecting a web app (like OpenWebUI) from a different host/domain